App-2
IM 04L51B01-41EN
1.2
Unable to acquire data
Unable to acquire data
ST1 LED
“Slow green blinking”
(Interval: 1.0 s)
ST2 LED
“Green solid”
Blinking red
Cause: Wireless device configuration error • • • •
Cause: Influence of transmission time limit • • • •
Cause: Sensor configuration error and the like • •
Cause: Low level radio signal • • • • • • • • • • • • • •
To No. 2-1
To No. 2-2
To No. 2-3
To No. 2-4
No
Corrective action
2-1 Cause: Low level radio signal
2-1
The antenna direction may not be appropriate. Adjust the direction.
Change the antenna to a cable type (roof top antenna or planar antenna), and change
the installation location of the antenna.
The wireless device may be outside the radio range. Install a repeater.
The installation environment may be outside the guaranteed operating range.
Check the installation environment.
• Check the guaranteed operating conditions.
Radio interference may be occurring due to the ambient environment (e.g. shield).
Change the installation location if you can move the wireless device.
If you cannot, install a repeater.
2-2 Cause: Wireless device configuration error
2-2
The station number and short address pairs set in the station number list of the
coordinator may be not be correct.
Connect the maintenance console to the coordinator, and set the correct station
number and short address pairs.
• Maintenance console window: Coordinator configuration > Module setup > Station
number setup > Station number list
The maximum number of multidrops set in the coordinator may not be correct.
Connect the maintenance console to the coordinator, and set the correct maximum
number of multidrops.
• Maintenance console window: Coordinator configuration > Module setup > Station
number setup > Specification method of Station numbers > Station number list
The protocol set in the coordinator may not be correct.
Connect the maintenance console to the coordinator, and set the Modbus protocol.
• Maintenance console window: Coordinator configuration > Protocol setup > Protocol
type
The short address set in the router may not be correct.
Connect the maintenance console to the router, and set the correct short address.
• Maintenance console window: Router configuration > Module setup > Basic
configuration > Short address
The association between the coordinator configuration value and the short address
derived from the station number may not be correct.
Review the station number and short address design, connect the maintenance
console to the router, and set the correct short address.
• Maintenance console window: Router configuration > Module setup > Basic
configuration > Short address
2-3 Cause: Influence of transmission time limit
2-3
There may be a great number of sensors connected to a single router causing the
transmission time to be longer. This may cause some of the data to be discarded due
to the data transmission time limit.
Add routers in order to reduce the number of sensors connected to a single router.
There may be a great number of sensors connected to a single router causing the
transmission time to be longer. This may cause some of the data to be discarded due
to the data transmission time limit.
Connect the maintenance console to the coordinator, and change the time setting of
the radio usage rate.
• Maintenance console window: Router configuration > Module setup > Basic
configuration > Monitoring unit time of radio transmission
Appendix 1 Troubleshooting